there's lots
you'll need a special cheat card.
No reason in particular. Only if you wanna mark your special pokemon :P
You get a card, which is worthless; nothing "Special" happens
The Mega Charizard Pokemon Box typically contains a special Mega Charizard card, a jumbo-sized version of the card, four Pokemon booster packs, and a code card for the Pokemon Trading Card Game Online.
its a special code that you access online
POKEMON SP stands for trainers Pokemon-gym too appears Pokemon rising rivals POKEMON FBsumpreme victors
Nothing completely special. If you trade your Pokemon to a friend and they see that mark they will know that it was you that owned that Pokemon because you would most likely put that same mark on every other Pokemon that you like or train. Or you could use them to help sort them in your PC.
Wonder cards are slots of information that tell you when you get a "special" Pokemon. This is, basically, Pokemon from Pokemon Battle Revolution, or Pokemon from Nintendo Events.
Lavender Town> Radio Tower> Someone
from the Pokemon mark from the Pokemon mark from the Pokemon mark
promo cards are special cards given to players upon winning a Pokemon card tournament... so yes
NO.